Proportioner for fluid spray gun with air valve control

Details Proportioner for fluid spray gun with air valve control Proportioner for fluid spray gun with air valve control

1995-02-13

1996-09-17

Kaufman, Joseph A.

Dispensing

Plural sources, compartment, containers and/or spaced jacket

With discharge assistant for each source

91305, 2221455, 222249, 222333, B67D 552

Patent

active

055560075

ABSTRACT:
An air-operated spray gun for spraying two fluid components in proportional amounts has the fluids fed separately from a pair of fluid cylinders each containing a fluid-operated double-acting piston with the volumes of each cylinder being in accord with the desired proportion of the fluids. The fluids are fed from the cylinders through fluid flow control valves which are switchable between a first position for directing fluid from a fluid source into one end of its associated cylinder and out the opposite end of the cylinder to the spray gun and a second position for directing the fluid out of the one end of the cylinder to the spray gun and into the opposite end of the cylinder from the fluid source. Air control valves instantaneously switch the fluid flow control valves from one position to the other. Sensing devices operate the air control valves when the cylinder pistons reach the ends of their strokes.

REFERENCES:
patent: 3734352 (1973-05-01), Dooley
patent: 3799402 (1974-03-01), Meister et al.
patent: 4095628 (1978-06-01), Laub, III
patent: 4469251 (1984-09-01), Sperry et al.
patent: 4870891 (1989-10-01), Shew et al.
patent: 4993596 (1991-02-01), Brown

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